Portable liquid-spraying apparatus.



W. H. GILMOUR.

PORTABLE LIQUID SPRAYING APPARATUS.

APPLICATION FILED 00114, 1914.

1,122,099. Patented Dec. 22, 1914.

l l l JnyenZOF" 5025766615 za zzmo wr- WILLIAM H. GILMZOUB, OF LIVERPQOL, ENGLAND.

PORTABLE LIQUID-SPRAYING APPARATUS.

Specification of Letters Batent. Patented e 22 1 914.

Application filed October 14, .1914. Serial u ess,e19..-.

To all whom it may concern Be it known that I, Win-LIAM HENRY GIL- Mo'mna subject of the King of England, residing at 47 Rodney street, Liverpool, in the :county :of Lancaster, England, have invented new and useful Improvements in liquid so forced, and combines with the liquid in issuing ,from the-apparatus, and by it,.the' liquidZis atomized, and formed into a fine mist-like discharge. this kind are largely used by dentists and doctors, and others, for spraying or supplying a jet or stream of chemical substance or medium into the mouth or teeth, and other organs of the body; and the chief ob ject of the presentinvention isto provide an improved apparatus -of this kind, primarily, butnot exclusively, for dentists or doctors use, which is simple, inexpensive, and at the same time, effective. Also in apparatus ,of this kind, there has been provided in combination, an air pump, fitting into a cylinder or chamber, into which it discharges air compressed by it; and in combination with this chamber or cylinder there has been provided a liquid containing cylinder or chamber, connected with the spraying portion, to which the air passes from the aforesaid cylinder or vessel, through a communicating pipe. And this air partly goes into the chamber containing the liquid and acts on its surface, or has to force it up the liquid discharge tube; and

partly up through a pipe to a point near 7 the discharge nozzle, where the air mixes with the liquid and atomize-s orvaporizes it.

My invention consists in thegeneral arrangement of parts and especially in provision of a regulating valve or cock and the particular arrangement of the liquid cham- The in ention will be further described with the aid of the accompanying drawings which illustrate it, and in which- Figure 1 is a vertical section through the air pump and water containing vessel; Fig. 2 is an outside elevation; while Fig. 3 shows a detail in section.

1 represents the air pump casing; 2 is Apparatus of,

- case to the vessel the piston of it; 3 the piston rod; and 4 the handle for-operatingthe rod and piston. 5 represents the air inlet valve, and 6 the discharge valve of the pump.

10 is the liquid containing vessel, 11 is tlleliquid discharge pipe dipping into it, and extending to its lower part; and 12' is the air supply pipe extending from the uppei part of the chamber or vessel 10.

13 represents a valvular device, connected at one part by a pipe 14, with the air containing chamber 20, and by another pipe 15 with the upper part of the vessel 10. Both the vessel 10, and the air pump barrel extend into and fit within the vessel. 20,"which is preferably a cylinder, and constitutes the compressed air reservoir; and this liquid vessel 10, and the pump may advantageously be secured into the upper cover 21, which is separable -from, and conveniently screwed on to the upper end of the cylinder-20, and sealed by a packing or washer between its upper edge and the cover; 7

'lheair-jpump is'of the-type in which the inlet valve 5 is fixed on the piston rod 3, and the rod is movable more or less in the piston; the valve 5 controlling passages through the piston. Thus, as the piston rod is pulled up, the valve 5 is moved off the apertures in the piston, and air can pass through them to the under side thereof;

while when the piston rod is moved down, the valve closes these passages, and air is compressed in the cylinder beneath the piston, and thrust out through discharge nonreturn valve 6, into the vessel 20. The valve 13 is placed so that when the apparatus is grasped,by the right hand, the actuating head 16 of the Valve within this case will just come opposite the thumb of the holder; and thus by pressing in the thumb the valve will be operated, and opened, and compressed air admitted to the valve case by the and delivered from the valve 10 by the pipe connection 15. -Otherwise, the valve of the device conduit 14,

which is a non-return valve, will be closed by a spring, and so an cannot pass from the vessel 20 to the'vessel10. *The pressure of the air so admitted to the vessel 10, acting upon the surface of the liquid in it, forces this liquid by the pipe 11 through the discharge or nozzle end upon it; and some of this air'passes-by a small hole at 17 in the .base ofthe air pipe 12 which it passes up to the conical end 18 of this pipe 12, at the apex of which, and within which, the water supply pipe 11 is fixed; and this conical end 18 isprovided with a thin slit 19; through a which air in regulated quantities is dlS- charged; so that both liquid from the discharge surface of' the pipe 11, the aperture of which may be of the diameter of a small needle, are discharged separately at the termini of the pipes 11, 12; and they pass into a socket piece 25,. thelinner edge of which fits. over the base of the cone itself, and makes a close fit or\joint with it. The air and liquid under pressure, combine and mix together in this mixing socket piece 25, and the air being restricted, the combining. of

' the air and liquid in the manner desired is accomplished; and they pass together into the nozzle pipe 22, from the orifice of which (which may be again restricted) they passtogether; the character of the liquid and air stream being of the desired kind; That is it producesa species of boiling spray, when it meets with resistance, as when being delivered into a confined space, as into a hollow tooth, orgum,"or the like, which is effective and advantageous. The socket 25, with its nozzle pipe 22,-are secured on to the pipe 12 by means of a threaded union ring 23 screwing on to a threaded neck ring 24, theend of the unionf23 acting against a collar on the socket 25', so that it may swiv l,

What is claimed is a 1. A liquid spraying apparatus comprising in combination, a container vessel '20 constituting" an air reservoir; an air pump 1' extending down into and disposed within said vessel,.and having a hand operated part above its upper end; a separate liquid containing vessel 10; also extending down into and contained within the air vessel 20; an

air pipe-12 leading from the upper-part of the said liquid vessel 10, a liquid pipe 11 leading from the lower part .of the said liquid vessel; a liquid spraying nozzle device on the outer end of the said liquid'and air pipes; and a valvular device 13 adapted to be operated by the thumb or fin er at the upper part of the apparatus, a apted to pass air from the air container to the liquid .22 on said spraying device;substantially as set forth. v r

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. y W. H; GILMOUR. Witnesses:

FRANK E. FLEETWOOD,

WM. J. HUMrnRms. 

